Oe tientsin



E. A. SPERRY. GONCENTRATING TABLE.

2 SHEETS-SHEET l.

FILED OCT 4,1918.

' Patented Jan. 16, 1923.

UNITED STATES 'EDWIN'A. SPERRY, or TIENTSIN, CHINA. i

CONCENTRATING TABLE.

Application filed October 4, 1919.

To all whom it may concern:

Be it known that I, ED\VTN A. SrnRRY, a citizen of the United States, residing at Tientsin, China, have invented certain new and useful Improvements in Concentrating Tables; and I do declare the following tobe a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this specification.

This invention relates to a device for concentratingores, and the object thereofis to provide means which will permit of motion of a concentrating table in any direction in a horizontal plane and the provision of means to transmit to the table a variety of motions, as may be desired, according to the character of the, mineral handled; a It is also an object of the invention to quickly classify the values on the table as they pass thereover.

Briefly, the invention comprises a rigid base above which is mounted a movable or vanning frame, supported by twisted springs of sheet metal or some similar material having suflicient elasticity. The twisted springs readily permit motion in any direction horizontally, but prevent vertical motion. A concentrating table is positioned above the vanning frame, the lower end being mounted at a single central point on the frame and the upper end being connected with the frame by adjustable means for varying the inclination of the table either transversely or longitudinally. The table -is provided with grooves extending diagonally from one side, these grooves being relatively wide and deep at said side of the table and gradually decreasing in depth and width until they merge into the surface of the table on a line parallel with the sides thereof. This construction leaves one side of the table plane, and this preferablyhas a downward slope relatively to the plane of the table proper. i

In the drawing:

Figure 1 is a plan view, indicated by line 1l of Figure'5. v

Serial No. 328,458.

Figure 2 is an end elevation indicated by lines 2-2 of Figures 1 and 5.

Figure 8 is. a view taken on the line 3-3 of Figure 5. V Figure 4 is anenlarged elevation of one of the eccentrics. Y I Figure 5is a side elevation indicated by line 5+5 of Figure 1.

Figure 6 is anend elevation from the line 6-6 of Figure 5 and showing the-end opposite to that of Figure 2. I I The base 10 has a plurality of vertically disposed twisted members .12, formed of sheet spring metal, secured at their lower ends thereto, The upperen'dsof these spri g 12 are securedito the movable vanvning frame 1%. Two shafts 16 are located along one end and alo ng one side of the base ,10, being mounted in brackets 18. One shaft carries a pulley 20 by means of which power is transmitted and bevel gears QQ'tra-nsmit power to the othershaft. Each shaft carries one, two, or more, "eccentrics, 24, comprising eccentric pieces 23'mounted directly on the shafts, and adjustable eccentric sleeves 25 thereabout, by means ofwhich the stroke or throw of each eccentric maybe adjusted. As shown in the drawings, a twisted sheet metal spring 26 issecured to theeccentric 2'4: at 124, at the end of the machine, and twisted springs 28 are secured to, the eccentrics at the side of'the machine, these springs 26 and 28 being similar in construction, to the springs 12. The inner ends of the springs 26 and 28. are connected to blocks or beams 30 and 32respectively, secured to the under side of the frame 14, wherebyniotion is transmitted to the frame. The framework 34 of-the table supported bymeans of straps 36, bolted theretoat the upper ends and provided at theirlower ends with slots '38,adjustable upon bolts 40, for deter mining the inclination of the table. At the opposite end, a pin 42 projects from the framework 34: and passes through an aperture in the bracket 44, the pin being retained if desired by means of a nut 46. This pin 42 is centrallylocated on the lower end of the framework 34, thereby providing three points ofjsupport'for the table in connection with woa i jsta e tra 35- 33 this chine diagonally acr0ss =toWard then ot'her1 side, terminating on a line indicated at 56. These grooves opposite the l1ne-"56-"a re relatively deep and wide. Asthey ext-end towards the opposite side'f they' becomegra'dually: narrower and more. shallow nuntil vthey merge into the table top at" the line 56. This leaves a narrow, smooth stri p 58, :parallel with the side of the table, whichcmay .be; inclined as shownin Figure. 2, relatively tothe table proper in order.tolfacilitatezdis charge of the values. .Mounted:above 'the table is a Water supply ;/p i-pe 60,' having ln anches -62=1 extending a approxini ately. .p arallel with'lFthe .rifiiargroo'ves 54.

In the operationofi the ClGVlCQ'aPOWBIiLP- plied throughptilleyi'QO is transmitted by the bevel gears" 22eto theshaits 16. The relative speeds offthe shafts' 16 maybe governed by changingithe relative sizeof the gears- 22. The motion. transmitted to the springs '26 and 28 may be varied byzidjhs'ting'the eccentricsleeves 25, i In this manner the stroke bf one offthe springs. maybe 'made longer or shorter. than thatlbf the others, "and this may be.. 1fttrther ."irifinenced by; giving a variable speed bf rotati'on to the-shafts 16. "Thus vaious cn m'b'iaat onsefthe'se" features will enable'l'the T-fopei atm' T Ttoj produce any motion from a straight,"diagonalinotion, to ajcircnlar motion, as maybe requiredjfor different'kinds "ofo'res. It is'obvious' th'at,due to the twistedstrl'ieture'of the springs 26 and 28, motion in any direction perpendicular to the axisof thespringsmay be permitted indejienden'tly 0f the thrust of [the given spring but thatT the "tliru'st 'transmittedi'to thejspring'will be' di'rectly transmitted to the frameworkdue to' thefact' that the'length of the spring is constant. I

Similarly."motion' in any :Yliretitimr in a horizontal? plane i \vill""beI permitted by" the springs 12but verticalmotinn of lthefrainexi o'rk" 14a The i bf thertableeU havingbeen listing the straps 1 and 'the"pro1cierf'mo o a LngPb'eent-ransi itted to the tableasabove described ptilp' isfed thereto from the hopper '52for from" any other" suitable source. The Tittle grooves54 produce classification of the mineral as -it passes 'over'them: theheavier mineral being workedtoward the plainstri-p 58 *wh ilethe "gan gue washedoveriz theigrooves;as is obvious. Thez heimeremm ral wnl -ceme at amweather-header the table ancl the lighter "mine al, 'lewer dewn The-tnennation ofithe plain strip 58 with respect to the bod' v of the table produces a ready discharge of the minerals as soon as they leave the lime grooves 541:.

I claim 1. Concentrating apparatus comprising a base, upwardly projecting springs connected at their lower ends With said base, a tablesnpporting frame'positioned above said base and having the upper ends of said springs con'nectedthereto, whereby said springs support said frame, means to impart horizontal movementto said flame comprising twisted metal spring straps connected to said frame ani'leccentrics connected with said straps to reciprocate the same, certain of said eccentLiCs'being positioned'at one "side of' the frame, and certain of said eccentrics and straps beingjposition'ed' atone end of the frame.

Qonc'entratingvapparatus comprising a base;ti 'jwardly projecting springs connected at 'thein'lower' ends withsaid b'ase, a table supporting frame positioned above said base andhavingwthe upper 'ends or said springs connected 'theretofwhereby said springs support said frame, means'toimpart horizontal 1no\'re11'1ent"to said frame, comprising; straps connected to said frame and "eccentrics connected with said straps to reciprocate the same. certain of said eccentrics being positionedi at o'neside of the frame and'certain ofsaid GCCBIItIlCS'bGiHg positioned attheach j a'cent feI-i d o f the'frame; whereby motion may bexnroduced in-a direction other than in the rectioirandcertain thereof extending in 'another"direction, and means to recipi 'ocatc ously imparting to the table reciprocating movement in both. longitudinal and transverse directions, including means for varying the degree of transverse reciprocation at different points along the side of the table.

6. Operating mechanism for concentrating tables, comprising in combination with the table aa'suppor-t therefor, comprising means for permitting horizontal movement in all directions, and means for simultaneously imparting to the table reciprocating movement in both longitudinal and transtaneously imparting to the said frame reciprocating movement in both longitudinal and transverse directions, including means for varying the degree of longitudinal reciprocation at different points along the end of the frame.

8. Operating mechanism for concentrating tables, comprising in combination With the table a frame upon Which the latter is mounted, a support for the frame comprising means for permitting horizontal movement in all directions, and means for simultaneously imparting to the said frame reciprocating movement in both longitudinal and transverse directions. including means for varying the degreeof transverse reciprocation at difierent points along the side of the frame.

9. Operating mechanism for concentrating tables, comprising in combination with the table a frame upon Which the latter is mounted, a support for the frame comprising means for permitting horizontal movement in all directions, and means for simultaneously imparting to the said frame reciprocating movement in both longitudinal and transverse directions, including means for varying the degree of reciprocation in both directions different and side of the frame.

'10. Operating mechanisr. for concentrating tables, comprising in combination with the table a horizontally disposed frame upon which the table is mounted, a support for the frame comprising means for pennitting horizontal movement in all directions, and means for simultaneously imparting to the frame reciprocating movement in both longi tudinal and transverse directions, including points along the en d .means for varying the degree of longitudinal reciprocation at different points along the end of the frame.

11. O erating mechanism for concentrat ing tables, comprising in roinhinatimi with the table a horizontally disposed frame upon which the table is mounted, a support for the frame comprising means for permitting horizontal movement in all directions, and means for simultaneonsly imparting to the frame reciprocating movement in lEOtll longitudinal and transverse directions, includ ing means: for varying the degree of transverse reciprocation at different points along the side of the frame. r

12. Operating mechanism for concentrating tables, comprising in combination With the table a horizontally diseosed frame n 3011 which the table is mounted, a support for the frame comprising means for permitting horizontal movement in all directions, and means for simultaneously imparting tot-he frame reciprocating movement in both longitudinal and transverse directions, including means for varying the degree of reciprocation in both direct-ions at different points along the end and side of the frame.

13. Operating mechanism for concentrating tables, comprising in combination with the table a frame a support for the frame comprising means for permitting horizontal movement in all directions, means for supporting the table on said frame in a longitudinally inclined position, and means for simultaneously imparting to the frame re ciprocatingmovement in both longitudinal and transverse directions, including means for varying the degree of longitudinal reciprocation at different points along the end of the frame.

14. Operating mechanism for concentrat ing tables, comprising in combination with the table a frame a support for the frame comprising means for permitting horizontal movement in all directions, means for sup porting the table on said frame in a longitudinally inclined position, and means for.

movement in all directions, means for sup porting the tables on said frame in. a longitudinally inclined position. and means for simultaneously imparting to the frame re ciprocating movement in both longitudinal and transverse directions, including means for varying the degree of reciprocation in both directions at different points along the end and side of the frame.

16. Operating mechanism for concentrating tables, comprising in combination With the table a frame a support for the frame comprising means or permitting horizontal movement in all directions, means for ad justinggthe .tahle on the'frame to give it both longitudinal and transverseinclination, and means for simultaneously imparting t0 the table reciprocating movement inlooth longitudinal and transverse directions, including means for varying the degree of longitudinal reciprocation at different points along the end. of the frame.

17. @perating mechanism for concentrating tables, comprising in combination with the table a frame a support-for the frame comprising means for permitting horizontal aovement in all directions, means for ad justing" tlie'table on the frame togive it both longitudinal and transverse inclination and means for simultaneously impartinp; to the table reciprocating movement in 'hoth longitudinal and transversedirections, including means for varying the degree of transverse reciprocation at diiferent points "along the side'of the frame.

18. Operating mechanism for concentrat- 'ing tables, comprising in combination v'vith the table a1frame, means tor'adjusting the table on the frame to give itboth longitudinal and. transverse inclination, and means for simultaneously imparting to the table reciprocating movement in both longitnd'inaland transverse directions, including means for varying the degree of reciprocation in both directionsat different points along both the end and side of the frame.

EDWVIN -A. SPERRY. 

